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Finding the Fourth Proportional to 685,436.56, 945,604.67 and 413,353.26

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Solution

The fourth proportional to 685,436.56, 945,604.67 and 413,353.26 is: 570,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,436.56 : 945,604.67 = 413,353.26 : x
  2. Step 2: Convert to fraction form
    685,436.56/945,604.67 = 413,353.26/x
  3. Step 3: Cross multiply
    685,436.56x = 945,604.67 × 413,353.26
  4. Step 4: Simplify right side
    685,436.56x = 390,868,770,948.96
  5. Step 5: Solve for x
    x = 390,868,770,948.96/685,436.56
  6. Step 6: Final answer
    x = 570,247.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.